The Bouncer OST: Original Japanese original sound track. 2 discs.
The Bouncer Original Video Game Soundtrack: North American release from Tokyo Pop with selected tracks from the original OST. 1 disc.
The Bouncer Visual Arts Collection: Japanese hardcover book. CGs and other artwork for the game. Released by Digicube.
The Bouncer Maximum: Japanese softcover book that contains artwork, specs and details for places, characters, and technology, character background, original character designs, stories about the characters, etc. It has basically everything you could possibly want to know about The Bouncer.